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Please put carriage returns at the end of your lines. I talk about the modem problem further down, for those following the other 701 modem thread. On Mon, 5 Jan 1998, William C. Hay wrote: > > Battery: The battery lasts 1.5 to 2 hours, which is standard > as far as I know, The NiCd should last about 1.5 hours. The NiMH lasts about 2.5 hours new, though you can eke out 3+ hours if you have power management set up wisely. My NiMH (2.5 years old) now only gives a little under 2 hours. I haven't found my 2nd NiMH since I moved (hint: let your friends help you move, but don't let them help you pack), but I suspect it'll hold about 2.5 hours since I've only used it a dozen or so times. > but the displayed remaining battery time > does not jibe with reality. As soon as the battery reaches the > red level (30%), it's time to switch to AC power or the system > shuts down quickly. This happened under both Win 3.1 and > Win95. I had this problem once early on. I switched to my second battery to see if it might be a battery problem. The second battery discharged and recharged just fine, 100% -> 0%. When I stuck the original battery it, it too worked just fine. A couple months ago, the battery would show 100%, but quickly dropped to 0% about 1 minute after I took it off AC. Plugging it back into AC would show the charge beginning 0% to about 5% at which point it would jump to 100%. Plugging in my new battery did not help. Since I rarely used the machine anymore, I just left it on AC and a few weeks later it seemed to be charging normally again. I suspect the problem is with the charging mechanism built into the 701. Perhaps it's reading the battery voltage incorrectly, or somehow it thinks you have a NiCd when you have a NiMH or vice versa. > Built-in modem: Dialing in under Win95 to our NT4.0 RAS, I get > disconnected every 4-5 minutes with a host hang-up. This > doesn't happen to others who dial in with other equipment. > Once, just once, I stayed connected for 20 minutes before > being cut off. I suspect the modem, maybe some sort of power > save or something is cutting in. It seems too regular to be > line noise or similar. This happens with both battery and AC > power. This problem is well documented on this list. :-) It has something to do with LAPM compression. The modem is actually a software modem using a DSP chipset (kinda like the MWave except the software is read off ROM or something instead of loaded by the OS). Our guess was that there's a bug in the modem software or the DSP just isn't capable of doing LAPM compression along with a 14.4 or 19.2 connection. There's a simple AT sequence to switch the modem from LAPM to MNP 5 compression. I don't remember it offhand, but it seemed to fix the problem for most of the people who tried it. Look in your modem manual, or maybe someone with a better memory can post it. You lose a tiny bit of throughput on uncompressed data (MNP 5 has a theoretical maximum compression of 2:1, while LAPM has a theoretical maximum compression of 4:1, real-life values seem to be about 1.4:1 vs. 1.5:1), but you should stay connected. :-) -- John H. Kim kim@mak.com